JPS59207044A - Driving mechanism of tape recorder - Google Patents

Abstract

PURPOSE:To make a sure control possible and promote effectively power saving measures by receiving the operating force of a cam part in accordance with the operation of an operation member for stopping the running of a tape to unlock a driving member. CONSTITUTION:The charging force of a spring member 24 is switched to a weak force and a strong force because Q1>Q2 is true with respect to the use angle of the member 24 for a tape cassette 49 stored in a cassette storing part as shown in the figure, and the tape cassette 49 is detached easily and is attached surely by this member 24. In the driving mechanism of a tape recorder, a tape recorder mechanism part is so constituted that a cam part 45 which drives a driving member 35, which is set to the first and the second positions for uniform-speed running of the tape and stop of running, is used to unlock a lock member 47 which locks the driving member 35 in the first position. As the result, the driving mechanism of the tape recorder is controlled efficiently and surely without unstable elements such as a frictional force or the like in case of operation switching.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a drive mechanism for a tape recorder, and particularly to one suitable for logic-oriented drive mechanisms.

[Technical background of the invention]

Just as in the case of a tape recorder, it is possible to control the tape in a predetermined running state (recording, playback, fast forwarding, rewinding, etc.) and to control the running state and various controls easily and easily. Devices with so-called soft-touch operation have appeared and are becoming popular. This Yuzu tape recorder has a touch switch structure with a plurality of operators that put the tape recorder mechanism into a predetermined operating state or a stopped state, and a solenoid planter and the like are controlled using an LSI etc. exclusively for controlling the tape recorder. The movable member of the tape recorder mechanism is moved to a stop position corresponding to the operated operator, which promotes the so-called Ronok style.

[Background technology from the same store]

By the way, the above-mentioned tape recorder is still in the development stage and has many problems. Since the power consumption is controlled at a constant rate, the power consumption is high.
'It was not suitable for portable tape recorders using Miike, and was not satisfactory in terms of safety such as prevention of malfunction.

[Purpose of the invention]

This invention was developed in view of the above circumstances, and provides an extremely good 7-drive system for cheap recorders that has a simple configuration, can be controlled reliably, and effectively promotes power saving measures. The purpose is to

[Summary of the invention]

That is, the present invention includes a first rotary body that rotates independently of the running of the vehicle, and a second rotary body that is engaged with the first rotary body so as to be able to transmit rotation, with a portion that is not engaged with the first rotary body. In conjunction with the operation of the tape constant speed running operating member and the tape running stopping operating member, the first and second positions of the tape recorder 1 and 444 are set to a state where the tape runs at a constant speed and stops running. an actuating member; first and second actuators formed on the second rotary body and configured to rotate the second rotary body in a direction in which the second rotary body is engaged with the second rotary body in response to the actuation force of the actuating member; a retaining portion, a cam portion formed on the second rotary body corresponding to the first and 8g2 retaining portions, and receiving the operating force of the cam portion, the tape recorder mechanism portion is moved to the fixed position of the tape. a driving member that assumes first and second positions for causing the tape to run at a constant speed and a running stop state; and first and second positions that are interlocked with the drive member and that bring the tape recorder mechanism into a constant speed running state and a running stop state. a sliding member that is displaced to the second position; and a locking member that locks the drive unit at the first position, and the locking member is configured to move the drive unit in the first position in conjunction with the operation of the tape running stop operation member. The actuation force of the cam portion is applied to release the lock of the drive member, which is considered to be a standby state.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. That is, FIG. 1 shows the structure of the upper surface of a cassette tape recorder to which the present invention is applied, and in the figure, reference numeral 11 denotes a substantially rectangular main chassis. Approximately at the center of the cassette storage section 12 of the main chassis 1 is a pair of reel shafts 13. 14 are rotatably supported. And these reel shafts 73, 74
One driving gear 15, 16 is provided coaxially and integrally with each of the two.

The main shaft 11 still has the reel shaft 7,
? A rotary shaft 17 of a tape running motor (not shown) is projected onto a substantially perpendicular bisector of a straight line connecting the rotational axes of the rotary shafts 1 and 4, and a gear 18 is fitted onto this rotary shaft 17. A transmission gear 19 is meshed with this gear 18 via a friction mechanism (not shown). Here, this gear 19 is rotated clockwise and half-zero in the figure by the friction mechanism according to the rotational direction of the gear 18 driven by the motor, and the reel shaft 13. ;4 each gear 15.1
1 is fitted to a part of 6 so that rotational force can be transmitted. The reel shafts 13 and 14 are rotated and moved clockwise and counterclockwise in the figure, respectively, so that the tape (not shown) can run in the reverse and forward directions.

Here, the above-mentioned motor is illustrated so that the rotational speed and direction of rotation change according to the operation of an operation member for constant speed tape running (O sound, playback) and an operation member for high speed tape running (fast forward and rewind), which are not shown. It is controlled by an electronic governor circuit or the like. The tape constant speed and high speed running operation parts and the table row stop operation members (including pauses) are all touch switch structures, and when any of these is operated, an L button (not shown) dedicated to cheap record control is activated. As a result, the above-mentioned Kameko governor circuit is controlled, and the rotating and stopping states of the above-mentioned date drive motor corresponding to the operation are obtained.

Further, on the top surface of the main chassis 11, there are arrows (A) that are linked to the operation of the Tezo Uge speed running operation member.
A head chassis 20 that is slidable in the direction (B) is also provided. This head shell 20 has a recording/playback head 21 and an erasing head 22 on its upper surface, respectively, with mounting members 2.
77. 221 is mounted on the tower, and a guide/23 station is used for positioning the later-described chisel cassette (not shown in Figure 1). or may be provided. The upper head chassis 200 has a concave engaging portion 2, for example, at the upper joint portion in the figure.
0 is formed, and one end of the return spring member 24 is engaged with this engagement portion 201 so as to apply a biasing force in the direction of arrow (B). This spring member 24 has its first end supported by a shaft portion 111 installed in the main chassis 1, and its other end abuts a part of the tape cassette housed in the cassette storage portion 12. arranged so that they touch each other.

Here, the main chassis 1 is attached to the lower right side of the front chassis 20 in the figure, and as the chassis 20 slides, it moves in the forward and backward directions in the figure around the rotation axis 112. A pivotable pinch lever 25 is also provided.

Further, a pinch roller 28 is provided at one end of the pinch lever 25 and is pressed against a capstan 27 which becomes a rotation center axis of a flywheel 26, which will be described later, when the pinch lever 25 is rotated clockwise in the figure. There is. Then, the pinch lever 25 is moved by the arrow (
As the pinch roller 25 slides in the direction A), the pinch roller 25 is rotated in one direction nqI゛i in the figure.
7 and the arrow (B) of the chassis 20 above.
As it slides in the direction, it is rotated counterclockwise in the figure.
The pinch roller 25 is separated from the capstan 27.

Further, the main chassis 1 is provided with an erroneous erasure prevention mechanism 29 on the upper left side in the figure, which detects the presence or absence of an erroneous erasure prevention claw provided on the tape cassette and makes recording impossible.

Further, in the main chassis 11, an eject lever 30 is provided at the bottom of the accidental erasure prevention mechanism 29 in response to the operation of an eject operation member (not shown).
) is provided so as to be slidable in the direction. This eject lever 30 is biased in the direction of arrow (B) via a spring 31, and has a lock portion 32 at one end that locks a cassette lid (not shown) in a closed state, and a drive that controls the accidental erasure prevention mechanism 29. A portion 33 is formed. Further, the eject lever 30 has an elastic arm-shaped engagement portion 34 formed at its intermediate portion, corresponding to an engagement portion 36 of a drive member 35, the details of which will be described later.

In addition, a plurality of 37 in the figure each indicate the above-mentioned cassette storage section 1.
2 is a support stand for positioning a tape cassette.

FIGS. 2 and 3 each show a drive mechanism section constructed on the back side of the main chassis 1 of the cassette tape recorder shown in FIG. 1, and 26 in the figures is the flywheel. The flywheel 26 is to which the rotational force of a motor for driving a mechanism (not shown) is transmitted, and a gear 38 is integrally and coaxially formed on the lower surface of the flywheel 26 . The flywheel 26 has a capstan 27 rotatably supported by a bearing portion 113 formed in the main chassis 11.

Still, a control gear 39 is provided near the bearing portion 113 of the main chassis 11 via the rotating shaft 114 in correspondence with the gear 38 of the flywheel 26.
has first and second notches 391, 3 at predetermined positions.
92 is formed corresponding to the gear 38.

The gear 39 has first and second engaging portions a on its upper surface.9. ? , a 94.
are formed corresponding to the first and second notches 391 and 392, and an engaging protrusion 411 at one end of the actuating member 41 is engaged with this guide portion 40. This operating member 4
0 is housed in such a way that its middle portion is urged clockwise in the figure with a spring 42 interposed between the rotating shaft 115 installed in the main chassis 11. The other end of the actuating member 40 is supported by an actuating Al 44 of a solenoid planter 43.

Here, the solenoid planter 43 is turned on in response to the operation of the tape constant speed running operating member, and is turned on by an LSI signal dedicated to tape recorder control (not shown) being input thereto, and is turned on by the operation member for stopping the tape running. It is configured to be turned off via the LSI in response to an operation.

The gear 39 also has a drive cam portion 4 on its lower surface.
5 is formed to correspond to the guide portion 40, and a protrusion 451 for release is formed at the tip of the cam portion 45.

Here, the main chassis 1 has a rotation shaft 116 disposed above the gear 39 so as to sandwich the gear chassis 2θ.
, 117 have been planted. Of these, rotation axis 1
16 supports an intermediate portion of the drive member 35 with one end thereof corresponding to the cam portion 45. This drive member 35 has a locking portion 351 formed at the middle portion of one end thereof, facing the locking portion 202 of the above-described chassis 20 . One end of a spring member 46 is engaged with this engagement portion 35, and the other end of this spring member 46 is engaged with an engagement portion 203 formed on the above-described chassis 20. As a result, the drive member 35 rotates clockwise in the figure to slide the head chassis 20 in the direction of arrow (A) via the spring member 46, and causes the head chassis 20 to slide in the direction of arrow (B).
As it slides in this direction, it is rotated clockwise in the figure via the spring member 24.

On the other hand, the intermediate portion of a locking member 47 is rotatably attached to the rotating shaft 117, and a spring 48 is attached to one end of the locking member 47 so as to apply a biasing force counterclockwise in the figure. He is taken into care. A lock portion 471 is formed at the other end of the lock member 47 to correspond to one end of the drive member 35, and a curved engagement portion 472 corresponds to the protrusion 451 of the cam portion 45. It is formed by

That is, in the above-described secret mechanism, the solenoid sylanger 43 is turned off as shown in FIG. 3 when the tape is stopped running, so that the actuating member 41 is moved through the operating shaft 44f as shown in FIG. The engaging protrusion 41 is rotated clockwise.
1 is fully engaged with the second engaging portion 394 of the gear 39.

Here, the gear 38 of the flywheel 26 is opposed to the second notch 392 of the gear 39Vi, and is held in the cam portion 45 once in a non-transferable state. The driving member 35 and the locking member 47 are rotated most counterclockwise and clockwise in the drawings, thereby causing the head chassis 2o to slide most in the direction of arrow (B). Here, the helad chassis 20 is configured to control the tape recorder mechanism to stop tape running.

Next, when the tape is stopped running, the fourth
As shown in the figure, when the tape is run at a constant speed (for example, for playback), when the constant speed tape run operation member is operated, the solenoid syringer 43 is turned on as described above, and the operating shaft 44 is sucked. , rotate the actuating part 4 in the counterclockwise direction in the figure. At this time, the engaging protrusion 41 of the actuating member 41 is connected to the engaging part 2 of the guide part 40, t94.
The gear 39 is rotated slightly counterclockwise in the figure by pressing one end surface of the gear 39, so that the gear 39 meshes with the gear 38 of the flywheel 26. Here, this gear 38 is the gear 3
8 in the counterclockwise direction in the figure until the first notches 391 face each other, and one end of the actuating member 4 is engaged with the first retaining part 393 of the guide part 40. As a result, the driver 9 rotates the driving member 35 in the direction of the hour hand in the figure using the cam portion 45! 11 Let me finish 1. The tape recorder mechanism section is controlled to a constant speed running state of the tape by moving the disk chassis 2[theta] in the direction of the arrow (A) in the figure. At this time, as the drive member 35 rotates, the lock member 47 is rotated counterclockwise in FIG. Rock Lee.

Here, the -him self-driving member 35 has an engaging portion 36 at the other end.
is engaged with the retaining portion 34 of the above-mentioned inno eject lever 30, and prevents the operation of the ten eject operation members during one stroke of the tape running at a constant speed.

By the way, when the above-mentioned woo recorder<it u<bβ娑tete is in a constant speed driving state, for example in a town life state: til) 1
The head chassis 20, which is currently moving, is moved slightly back in the direction of the arrow (B) in the figure through a separate member (not shown) in conjunction with the operating member (fast forward, rewind) for fast forward running of the tape. The coal is rolled and kept in a recycled state. At this time, the driving member 35
is locked at the predetermined position described above by the locking member 47, and its engaging portion 36 maintains a state of being engaged with the retaining portion 34 of the InoEject Reper 30 to prevent operation of the ejecting operation member. This is what it is designed to do.

In addition, when the tape is running at a constant speed as described above, if the operation member for stopping running of the tape is operated again as shown in FIG. 3, the solenoid grand switch 43 is turned off. Then, the operating shaft 44 is ejected, and the operating member 4 is rotated clockwise in the figure.

At this time, the engaging protrusion 411 of the actuating member 41 presses one end surface of the first retaining part 393 of the guide part 40, causing the gear 39 to rotate slightly counterclockwise in the figure. , the gear 39 meshes with the gear 38 of the flywheel 26. Here, this gear 39 is rotated counterclockwise in the figure by the gear 38 until its second notch 392 faces each other, and the engaging protrusion 411 of the actuating member 41 is rotated by the gear 38 so that the second notch 392 thereof faces each other. 2 to engage with the retaining portion 394 of No. 2. At this time, as shown in FIG. 5, as the cam portion 45 of the gear 39 rotates, the protrusion 45 of the gear 39 is brought into contact with the opening of the cam portion 45 of the gear member 47.
The locking member 47 is rotated clockwise in the figure by pressing the engaging portion 472 against the urging force thereof, and the driving member 3 is rotated clockwise in the figure.
Unlock 5. As a result, this driving member 35
7 to the above position as the chassis 20 is moved counterclockwise in the figure by the biasing force of the spring member 24 attached to its upper end in the direction of the arrow (B) in the figure to the position shown in the figure 8g3. At this point, the tape recorder mechanism is controlled to stop tape running.

Here, as shown in FIGS. 3 and 4, the spring member 24 has a biasing force ( The tape cassette 49 can be easily separated from the tape cassette 49, and its mounting can be done reliably and cheaply.

In this way, the drive mechanism of the tape recorder includes a cam section 45 that drives the drive member 35 to take the first and second positions in which the tape recorder mechanism section runs at a constant speed and stops running the tape. to move the drive member 35 to the first
The locking member 47 is unlocked at the position shown in FIG. As a result, the drive mechanism of the tape recorder can be efficiently and reliably controlled without using unstable elements such as frictional force when switching its operation.

Therefore, it goes without saying that this invention can be modified in various ways without departing from the gist of the invention.

〔Effect of the invention〕

As described above, according to the present invention, with a simple configuration,
Furthermore, it is possible to provide an extremely good tape recorder drive structure that can be controlled reliably and that effectively promotes power saving measures.

[Brief explanation of drawings]

FIG. 1 shows a tape recorder according to an embodiment of the present invention.
・・Body movement +, ); 41'J is not shown in perspective view, Figure 2 and Rabbit: Figures do not show the back part of Figure 1, respectively. FIG. 3 is a plan view showing the operating state, and FIG. 5 is a plan view showing details of the unit 414.

Claims (1)

[Claims] A first rotating body that rotates independently of tape running, a second rotating body that is engaged with the first rotating body so as to be able to transmit rotation with a portion that is not engaged with the first rotating body, and a tape fixing member. an operating member that assumes first and second positions for causing the tape recorder mechanism to run the tape at a constant speed and stop running in conjunction with the operations of the operating member for fast running and the operating member for stopping tape running;
first and second engaging portions that are formed on the rotating body and rotate the second rotating body in a direction in which the second rotating body is engaged with the first rotating body upon receiving the operating force of the operating member; a cam portion formed on the rotating body corresponding to the first and second retaining portions; and an operating force of the cam portion to cause the tape recorder mechanism portion to run at a constant speed of the tape and to be in a state where the tape is stopped. a drive member that assumes first and second positions; and a member that is interlocked with the drive member to displace the tape recorder mechanism section to the first and second positions where the tape runs at a constant speed and the tape stops running. a sliding member that locks the driving member at the first position, and the locking member controls the operation of the cam portion in conjunction with the operation of the tape running stop operation member. A drive mechanism for a tape recorder, characterized in that it is provided so as to receive power and release the lock of the drive member.